convert a html table to CSV using ruby

table_to_csv.rb

require 'rubygems'
require 'nokogiri'
require 'csv'

f = File.open("table.html")
doc = Nokogiri::HTML(f)

CSV.open("output.csv", 'w') do |csv|
  doc.xpath('//table/tbody/tr').each do |row|
    tarray = [] 
    row.xpath('td').each do |cell|
      tarray << cell.text.gsub(/\n/, ' -- ').gsub(/\s+/, ' ').strip
    end
    csv << tarray
  end
end